311 lines
7.4 KiB
C
311 lines
7.4 KiB
C
/*
|
|
* Copyright (C) 2011 Sansar Choinyambuu
|
|
* HSR Hochschule fuer Technik Rapperswil
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* for more details.
|
|
*/
|
|
|
|
#include "imv_attestation_state.h"
|
|
|
|
#include <utils/lexparser.h>
|
|
#include <utils/linked_list.h>
|
|
#include <debug.h>
|
|
|
|
typedef struct private_imv_attestation_state_t private_imv_attestation_state_t;
|
|
typedef struct request_t request_t;
|
|
|
|
/**
|
|
* PTS File/Directory Measurement request entry
|
|
*/
|
|
struct request_t {
|
|
u_int16_t id;
|
|
int file_id;
|
|
bool is_dir;
|
|
};
|
|
|
|
/**
|
|
* Private data of an imv_attestation_state_t object.
|
|
*/
|
|
struct private_imv_attestation_state_t {
|
|
|
|
/**
|
|
* Public members of imv_attestation_state_t
|
|
*/
|
|
imv_attestation_state_t public;
|
|
|
|
/**
|
|
* TNCCS connection ID
|
|
*/
|
|
TNC_ConnectionID connection_id;
|
|
|
|
/**
|
|
* TNCCS connection state
|
|
*/
|
|
TNC_ConnectionState state;
|
|
|
|
/**
|
|
* IMV Attestation handshake state
|
|
*/
|
|
imv_attestation_handshake_state_t handshake_state;
|
|
|
|
/**
|
|
* IMV action recommendation
|
|
*/
|
|
TNC_IMV_Action_Recommendation rec;
|
|
|
|
/**
|
|
* IMV evaluation result
|
|
*/
|
|
TNC_IMV_Evaluation_Result eval;
|
|
|
|
/**
|
|
* Request counter
|
|
*/
|
|
u_int16_t request_counter;
|
|
|
|
/**
|
|
* List of PTS File/Directory Measurement requests
|
|
*/
|
|
linked_list_t *requests;
|
|
|
|
/**
|
|
* PTS object
|
|
*/
|
|
pts_t *pts;
|
|
|
|
/**
|
|
* File Measurement error
|
|
*/
|
|
bool measurement_error;
|
|
|
|
};
|
|
|
|
typedef struct entry_t entry_t;
|
|
|
|
/**
|
|
* Define an internal reason string entry
|
|
*/
|
|
struct entry_t {
|
|
char *lang;
|
|
char *string;
|
|
};
|
|
|
|
/**
|
|
* Table of multi-lingual reason string entries
|
|
*/
|
|
static entry_t reasons[] = {
|
|
{ "en", "IMV Attestation: Non-matching file measurement/s or invalid TPM Quote signature" },
|
|
{ "mn", "IMV Attestation: Файлуудын хэмжилт зөрсөн эсвэл буруу TPM Quote гарын үсэг" },
|
|
{ "de", "IMV Attestation: Falsche Datei Messung/en oder TPM Quote Unterschrift ist ungültig" },
|
|
};
|
|
|
|
METHOD(imv_state_t, get_connection_id, TNC_ConnectionID,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
return this->connection_id;
|
|
}
|
|
|
|
METHOD(imv_state_t, change_state, void,
|
|
private_imv_attestation_state_t *this, TNC_ConnectionState new_state)
|
|
{
|
|
this->state = new_state;
|
|
}
|
|
|
|
METHOD(imv_state_t, get_recommendation, void,
|
|
private_imv_attestation_state_t *this, TNC_IMV_Action_Recommendation *rec,
|
|
TNC_IMV_Evaluation_Result *eval)
|
|
{
|
|
*rec = this->rec;
|
|
*eval = this->eval;
|
|
}
|
|
|
|
METHOD(imv_state_t, set_recommendation, void,
|
|
private_imv_attestation_state_t *this, TNC_IMV_Action_Recommendation rec,
|
|
TNC_IMV_Evaluation_Result eval)
|
|
{
|
|
this->rec = rec;
|
|
this->eval = eval;
|
|
}
|
|
|
|
METHOD(imv_state_t, get_reason_string, bool,
|
|
private_imv_attestation_state_t *this, chunk_t preferred_language,
|
|
chunk_t *reason_string, chunk_t *reason_language)
|
|
{
|
|
chunk_t pref_lang, lang;
|
|
u_char *pos;
|
|
int i;
|
|
|
|
while (eat_whitespace(&preferred_language))
|
|
{
|
|
if (!extract_token(&pref_lang, ',', &preferred_language))
|
|
{
|
|
/* last entry in a comma-separated list or single entry */
|
|
pref_lang = preferred_language;
|
|
}
|
|
|
|
/* eat trailing whitespace */
|
|
pos = pref_lang.ptr + pref_lang.len - 1;
|
|
while (pref_lang.len && *pos-- == ' ')
|
|
{
|
|
pref_lang.len--;
|
|
}
|
|
|
|
for (i = 0 ; i < countof(reasons); i++)
|
|
{
|
|
lang = chunk_create(reasons[i].lang, strlen(reasons[i].lang));
|
|
if (chunk_equals(lang, pref_lang))
|
|
{
|
|
*reason_language = lang;
|
|
*reason_string = chunk_create(reasons[i].string,
|
|
strlen(reasons[i].string));
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* no preferred language match found - use the default language */
|
|
*reason_string = chunk_create(reasons[0].string,
|
|
strlen(reasons[0].string));
|
|
*reason_language = chunk_create(reasons[0].lang,
|
|
strlen(reasons[0].lang));
|
|
return TRUE;
|
|
}
|
|
|
|
METHOD(imv_state_t, destroy, void,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
this->requests->destroy_function(this->requests, free);
|
|
this->pts->destroy(this->pts);
|
|
free(this);
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, get_handshake_state,
|
|
imv_attestation_handshake_state_t, private_imv_attestation_state_t *this)
|
|
{
|
|
return this->handshake_state;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, set_handshake_state, void,
|
|
private_imv_attestation_state_t *this,
|
|
imv_attestation_handshake_state_t new_state)
|
|
{
|
|
this->handshake_state = new_state;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, get_pts, pts_t*,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
return this->pts;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, add_request, u_int16_t,
|
|
private_imv_attestation_state_t *this, int file_id, bool is_dir)
|
|
{
|
|
request_t *request;
|
|
|
|
request = malloc_thing(request_t);
|
|
request->id = ++this->request_counter;
|
|
request->file_id = file_id;
|
|
request->is_dir = is_dir;
|
|
this->requests->insert_last(this->requests, request);
|
|
|
|
return this->request_counter;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, check_off_request, bool,
|
|
private_imv_attestation_state_t *this, u_int16_t id, int *file_id,
|
|
bool* is_dir)
|
|
{
|
|
enumerator_t *enumerator;
|
|
request_t *request;
|
|
bool found = FALSE;
|
|
|
|
enumerator = this->requests->create_enumerator(this->requests);
|
|
while (enumerator->enumerate(enumerator, &request))
|
|
{
|
|
if (request->id == id)
|
|
{
|
|
found = TRUE;
|
|
*file_id = request->file_id;
|
|
*is_dir = request->is_dir;
|
|
this->requests->remove_at(this->requests, enumerator);
|
|
free(request);
|
|
break;
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
return found;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, get_request_count, int,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
return this->requests->get_count(this->requests);
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, get_measurement_error, bool,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
return this->measurement_error;
|
|
}
|
|
|
|
METHOD(imv_attestation_state_t, set_measurement_error, void,
|
|
private_imv_attestation_state_t *this)
|
|
{
|
|
this->measurement_error = TRUE;
|
|
}
|
|
|
|
/**
|
|
* Described in header.
|
|
*/
|
|
imv_state_t *imv_attestation_state_create(TNC_ConnectionID connection_id)
|
|
{
|
|
private_imv_attestation_state_t *this;
|
|
char *platform_info;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.interface = {
|
|
.get_connection_id = _get_connection_id,
|
|
.change_state = _change_state,
|
|
.get_recommendation = _get_recommendation,
|
|
.set_recommendation = _set_recommendation,
|
|
.get_reason_string = _get_reason_string,
|
|
.destroy = _destroy,
|
|
},
|
|
.get_handshake_state = _get_handshake_state,
|
|
.set_handshake_state = _set_handshake_state,
|
|
.get_pts = _get_pts,
|
|
.add_request = _add_request,
|
|
.check_off_request = _check_off_request,
|
|
.get_request_count = _get_request_count,
|
|
.get_measurement_error = _get_measurement_error,
|
|
.set_measurement_error = _set_measurement_error,
|
|
},
|
|
.connection_id = connection_id,
|
|
.state = TNC_CONNECTION_STATE_CREATE,
|
|
.handshake_state = IMV_ATTESTATION_STATE_INIT,
|
|
.rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
|
|
.eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
|
|
.requests = linked_list_create(),
|
|
.pts = pts_create(FALSE),
|
|
);
|
|
|
|
platform_info = lib->settings->get_str(lib->settings,
|
|
"libimcv.plugins.imv-attestation.platform_info", NULL);
|
|
if (platform_info)
|
|
{
|
|
this->pts->set_platform_info(this->pts, platform_info);
|
|
}
|
|
|
|
return &this->public.interface;
|
|
}
|